/
MultipartFormDataEncoder.as
92 lines (78 loc) · 2.4 KB
/
MultipartFormDataEncoder.as
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package com.ryanberdeen.net {
import flash.utils.ByteArray;
import flash.utils.Endian;
public class MultipartFormDataEncoder {
private var _boundary:String;
private var _postData:ByteArray;
private var finished:Boolean;
public function MultipartFormDataEncoder() {
_postData = new ByteArray();
_postData.endian = Endian.BIG_ENDIAN;
_boundary = '';
for (var i:int = 0; i < 0x20; i++) {
_boundary += String.fromCharCode(int(97 + Math.random() * 25));
}
}
public function addParameter(name:String, value:Object):void {
if (value == null) {
value = '';
}
writeBoundary();
writeLinebreak();
writeString('Content-Disposition: form-data; name="' + name + '"');
writeLinebreak();
writeLinebreak();
_postData.writeUTFBytes(value.toString());
writeLinebreak();
}
public function addParameters(parameters:Object):void {
for(var name:String in parameters) {
addParameter(name, parameters[name]);
}
}
public function addFile(parameterName:String, filename:String, data:ByteArray, contentType:String = 'application/octet-stream'):void {
writeBoundary();
writeLinebreak();
writeString('Content-Disposition: form-data; name="' + parameterName + '"; filename="');
_postData.writeUTFBytes(filename);
writeString('"');
writeLinebreak();
writeString('Content-Type: ' + contentType);
writeLinebreak();
writeLinebreak();
_postData.writeBytes(data);
writeLinebreak();
}
private function writeString(string:String):void {
for (var i:int = 0; i < string.length; i++) {
_postData.writeByte(string.charCodeAt(i));
}
}
private function finish():void {
writeBoundary();
writeDoubleDash();
}
public function get data():ByteArray {
if (!finished) {
finish();
}
return _postData;
}
public function get boundary():String {
return _boundary;
}
private function writeBoundary():void {
var length:int = _boundary.length;
writeDoubleDash();
for (var i:int = 0; i < length; i++) {
_postData.writeByte(_boundary.charCodeAt(i));
}
}
private function writeLinebreak():void {
_postData.writeShort(0x0d0a);
}
private function writeDoubleDash():void {
_postData.writeShort(0x2d2d);
}
}
}